Optical storage performance of cyanine film prepared by spin-coating process

Abstract

In this paper, a cyanine film has been prepared by spin- coating process on the pre-grooved polycarbonate substrate. The transmission, reflection and absorption spectra of the film were measured. The complex refractive index n, k of the film was calculated. Under the recording condition specified by CD-R Orange Book, the carrier to noise ratio (CNR) of the single dye layer disk are greater than 47 dB at traveling rate of 1.4 m/s, 2.8 m/s, and 5.6 m/s. The estimated lifetime of the CD-R using this dye film as the recording medium reaches up to 10 years under normal using condition.